13500418 has 4 divisors (see below), whose sum is σ = 20250630. Its totient is φ = 6750208.

The previous prime is 13500373. The next prime is 13500419. The reversal of 13500418 is 81400531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13300609 + 199809 = 3647^2 + 447^2 .

It is a super-2 number, since 2×13500418² = 364522572349448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13500419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3375103 + ... + 3375106.

Almost surely, 2^13500418 is an apocalyptic number.

13500418 is a deficient number, since it is larger than the sum of its proper divisors (6750212).

13500418 is an equidigital number, since it uses as much as digits as its factorization.

13500418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750211.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 13500418 is about 3674.2914963296. The cubic root of 13500418 is about 238.1126153019.

Adding to 13500418 its reverse (81400531), we get a palindrome (94900949).

The spelling of 13500418 in words is "thirteen million, five hundred thousand, four hundred eighteen".